采用可调Mach-Zehnder滤波的波长可切换掺铒光纤激光器

发布时间：2018-05-26 07:48

本文选题：可调谐掺铒光纤激光器 + M-Z滤波结构　；参考：《红外与激光工程》2017年10期

【摘要】：为了实现高稳定性的可调谐激光输出,提出并设计了一种基于马赫-曾德(M-Z)结构和光纤光栅串结合的掺铒光纤激光器,在M-Z干涉结构的一个干涉臂中加入光学延迟线(ODL),实现对干涉间隔的灵活可调。系统结构设计采用976 nm波长的LD作为泵浦源,长度为6 m的掺铒光纤作为增益介质;采用光栅串将特定波长的光反射回环形腔形成振荡;采用M-Z结构产生梳状滤波用来对光栅串反射回的光进行选择;通过调节ODL来改变腔内损耗,进而实现激光的可调谐输出,并通过在系统中加入可饱和吸收体(SA)和子腔结构来抑制波长的跳变。实验中,在泵浦功率为100 mW时,实现了单波长双波长和三波长的稳定的激光输出。单波长共输出13个,调谐范围为1 570~1 596 nm,调谐间隔为2 nm,边模抑制比均大于50 d B。
[Abstract]:In order to achieve high stability of tunable laser output, an erbium doped fiber laser based on Maher Ceng De (M-Z) structure and fiber Bragg grating series is designed and designed. The optical delay line (ODL) is added to an interference arm of the M-Z interference structure to realize the flexible and adjustable interference interval. The system structure is designed to use the LD of 976 nm wavelengths. An erbium doped fiber with a length of 6 m is used as the gain medium for the pump source; a grating string is used to oscillate the light reflecting ring cavity of a specific wavelength. The comb filter is used to produce a comb filter used to select the light reflected back by the grating. The tunable output of the laser is realized by adjusting the ODL to realize the tunable output of the laser and through the system. The saturation absorber (SA) and the sub cavity structure are added to suppress the jump of the wavelength. In the experiment, a stable laser output with a single wavelength and three wavelengths is realized when the pump power is 100 mW. The single wavelength is output 13, the tuning range is 1 570~1 596 nm, the tuning interval is 2 nm, and the edge mode suppression ratio is more than 50 d B.
【作者单位】：北京信息科技大学光电信息与仪器北京市工程研究中心光电测试技术北京市重点实验室;北京信息科技大学生物医学检测技术及仪器北京实验室;
【基金】：长江学者和创新团队发展计划(IRT1212) 北京市重大科技计划项目(PXM2013-014224-000077,PXM2012-014224-000019) 光电信息与仪器北京市工程研究中心开放课题(GD20150005)
【分类号】：TN248.1

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